Active Two-dimensional Steering of Radiation from a Nano-Aperture
Optics
2018-12-11 v1
Abstract
We experimentally demonstrate control over the direction of radiation of a beam that passes through a square nano-aperture in a metal film. The ratio of the aperture size and the wavelength is such that only three guided modes, each with different spatial symmetries, can be excited. Using a spatial light modulator, the superposition of the three modes can be altered, thus allowing for a controlled variation of the radiation pattern that emanates from the nano-aperture. Robust and stable steering of 9.5 degree in two orthogonal directions was achieved.
Cite
@article{arxiv.1812.03741,
title = {Active Two-dimensional Steering of Radiation from a Nano-Aperture},
author = {Laura S. Dreissen and Hugo F. Schouten and Wim Ubachs and Shreyas B. Raghunathan and Taco D. Visser},
journal= {arXiv preprint arXiv:1812.03741},
year = {2018}
}